Is there a risk that these service providers will follow CRS and report account balances back to our tax agencies? I am looking for a EUR card that I can use for normal living expenses. I would prefer not to be charged with tax evasion

No, because legally they are not considered as a bank but rather as a payment system (similar to Paypal)
Yep, they aren't considered as a bank so the companies don't report anything to the tax agencies,
however, if an institution from the government (such as police, tax agency, justice court, and similar) ask to the companies to provide a report needed for their investigations, they will give everything without a question
Thanks for the replies. So even N26, Bunq, Mistertango etc. are not legally considered as banks? If they don't report anything then the government institutions shouldn't even know to ask for information from them